Best isolation for new Oppo 203 bluray player?

Currently modding one of these, done the electronics side if it, now looking at mechanicsl damping.Considering damping the chassis with dedshete or the like, but also isolation feet.Came across herbies as well recommended, will go with a set kf these.Whats recommended?

3 or 4 feet? (any option better?)

Is the normal Tenderfoot tall enough for the Oppo, or should I go for the taller type.(Think the normal will be ok)